When uploading item from DTW , system generating error about customer code

Hello Community ,

There is simply a script wherever I americium facing an error 
Uploading the point from DTW , ran the simulation and strategy shown nary error, 100% successful
Then aft importing , DTW generated mistake " 2 Created Failed A002 (400100) Customer Code magnitude needs to beryllium 10 digit. (400100) Customer Code magnitude needs to beryllium 10 digit.oItems "